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A shell is fired from a cannon with a ve...

A shell is fired from a cannon with a velocity `v (m//sec.)` at an angle `theta` with the horizontal direction. At the highest point in its path it explodes into two pieces of equal mass. One of the pieces retraces its path to the cannon and the speed (in `m//sec.`) of the other piece immediately after the explosion is

A

`3vcostheta`

B

`2vcostheta`

C

`3/2vcostheta`

D

`sqrt(3/2)vcostheta`

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SL ARORA-System of particles & rotational Motion-EXERCISE
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  2. A ball hits the floor and rebounds after an inelastic collision. In th...

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  3. A shell is fired from a cannon with a velocity v (m//sec.) at an angle...

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  4. A uniform bar of length 6a and mass 8 m lies on a smooth horizontal ta...

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  5. Two blocks A and H. each of mass m, are connected by a massless spring...

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  6. A tube of length L is filled completely with an incompressible liquid ...

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  8. Let I be the moment of interia of a uniform square plate about an axis...

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  9. A solid cylinder is rolling down a rough inclined plane of inclination...

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  10. If the resultant of all the external forces acting on a system of part...

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  11. A point mass of 1kg collides elastically with a stationary point mass ...

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  12. A thin ring of mass 2kg and radius 0.5 m is rolling without on a horiz...

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  13. The figure shows a system consisting of (i) a ring the outer radius 3R...

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  14. Two solid cylinders P and Q of same mass and same radius start rolling...

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  15. A block of mass M has a circular cut with a frictionless surface as sh...

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  16. A rigid uniform bar AB of length ? is slipping from its vertical posit...

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  17. A wheel of radius R and mass M is placed at the bottom of a fixed step...

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  18. The potential energy of a particle of mass ? at a distance ? from a f...

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  19. Consider a body of mass 1.0 at rest at the origin at time t = 0. A ...

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  20. Satement-1: if there is no external torque on a body about its centre ...

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